and mr. gar for the state of florida said that these were extraordinary requirements and he was supported by the obama administration's lawyer who also said what would happen if the court constitutionalized these requirements was that you would start having mini trials with expert witnesses and dogs would be put on trial to determine their reliability and it just wasn't necessary. the court seemed to have trouble trying to find what kind of requirements would ensuring reliability and therefore probable cause for a search. and justice sotomayor, for example, noted that there have been some recent studies that show these dogs aren't infallible. there's one that she noted that had a 12% accuracy rate and she said she was a little troubled by that but it wasn't as clear in the house case that the justices were going to have a problem. >> woodruff: we're going to focus on the track record of those dogs. >> right, and it's hard to measure how reliable a trained dog is. >> woodruff: quickly, marcia,